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85e174ba RL |
1 | /* |
2 | * pNFS client data structures. | |
3 | * | |
4 | * Copyright (c) 2002 | |
5 | * The Regents of the University of Michigan | |
6 | * All Rights Reserved | |
7 | * | |
8 | * Dean Hildebrand <dhildebz@umich.edu> | |
9 | * | |
10 | * Permission is granted to use, copy, create derivative works, and | |
11 | * redistribute this software and such derivative works for any purpose, | |
12 | * so long as the name of the University of Michigan is not used in | |
13 | * any advertising or publicity pertaining to the use or distribution | |
14 | * of this software without specific, written prior authorization. If | |
15 | * the above copyright notice or any other identification of the | |
16 | * University of Michigan is included in any copy of any portion of | |
17 | * this software, then the disclaimer below must also be included. | |
18 | * | |
19 | * This software is provided as is, without representation or warranty | |
20 | * of any kind either express or implied, including without limitation | |
21 | * the implied warranties of merchantability, fitness for a particular | |
22 | * purpose, or noninfringement. The Regents of the University of | |
23 | * Michigan shall not be liable for any damages, including special, | |
24 | * indirect, incidental, or consequential damages, with respect to any | |
25 | * claim arising out of or in connection with the use of the software, | |
26 | * even if it has been or is hereafter advised of the possibility of | |
27 | * such damages. | |
28 | */ | |
29 | ||
30 | #ifndef FS_NFS_PNFS_H | |
31 | #define FS_NFS_PNFS_H | |
32 | ||
a2a5dea7 | 33 | #include <linux/refcount.h> |
45df3c8b | 34 | #include <linux/nfs_fs.h> |
94ad1c80 | 35 | #include <linux/nfs_page.h> |
e6cf82d1 | 36 | #include <linux/workqueue.h> |
94ad1c80 | 37 | |
2409a976 FI |
38 | struct nfs4_opendata; |
39 | ||
4541d16c FI |
40 | enum { |
41 | NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */ | |
f7e8917a | 42 | NFS_LSEG_ROC, /* roc bit received from server */ |
a9bae566 | 43 | NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */ |
016256df | 44 | NFS_LSEG_LAYOUTRETURN, /* layoutreturn bit set for layoutreturn */ |
b3dce6a2 | 45 | NFS_LSEG_UNAVAILABLE, /* unavailable bit set for temporary problem */ |
4541d16c FI |
46 | }; |
47 | ||
875ae069 PT |
48 | /* Individual ip address */ |
49 | struct nfs4_pnfs_ds_addr { | |
50 | struct sockaddr_storage da_addr; | |
51 | size_t da_addrlen; | |
52 | struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
53 | char *da_remotestr; /* human readable addr+port */ | |
54 | }; | |
55 | ||
56 | struct nfs4_pnfs_ds { | |
57 | struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */ | |
58 | char *ds_remotestr; /* comma sep list of addrs */ | |
59 | struct list_head ds_addrs; | |
60 | struct nfs_client *ds_clp; | |
a2a5dea7 | 61 | refcount_t ds_count; |
875ae069 PT |
62 | unsigned long ds_state; |
63 | #define NFS4DS_CONNECTING 0 /* ds is establishing connection */ | |
4541d16c FI |
64 | }; |
65 | ||
974cec8c | 66 | struct pnfs_layout_segment { |
566052c5 | 67 | struct list_head pls_list; |
a9bae566 | 68 | struct list_head pls_lc_list; |
566052c5 | 69 | struct pnfs_layout_range pls_range; |
eba6dd69 | 70 | refcount_t pls_refcount; |
66755283 | 71 | u32 pls_seq; |
4541d16c | 72 | unsigned long pls_flags; |
566052c5 | 73 | struct pnfs_layout_hdr *pls_layout; |
974cec8c AA |
74 | }; |
75 | ||
64419a9b AA |
76 | enum pnfs_try_status { |
77 | PNFS_ATTEMPTED = 0, | |
78 | PNFS_NOT_ATTEMPTED = 1, | |
ceb11e13 | 79 | PNFS_TRY_AGAIN = 2, |
64419a9b AA |
80 | }; |
81 | ||
85e174ba RL |
82 | #ifdef CONFIG_NFS_V4_1 |
83 | ||
84 | #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" | |
85 | ||
39280a5a PT |
86 | /* |
87 | * Default data server connection timeout and retrans vaules. | |
88 | * Set by module parameters dataserver_timeo and dataserver_retrans. | |
89 | */ | |
90 | #define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */ | |
91 | #define NFS4_DEF_DS_RETRANS 5 | |
b3dce6a2 | 92 | #define PNFS_DEVICE_RETRY_TIMEOUT (120*HZ) |
39280a5a PT |
93 | |
94 | /* error codes for internal use */ | |
95 | #define NFS4ERR_RESET_TO_MDS 12001 | |
96 | #define NFS4ERR_RESET_TO_PNFS 12002 | |
97 | ||
e5e94017 BH |
98 | enum { |
99 | NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ | |
100 | NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ | |
43f1b3da | 101 | NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ |
2370abda | 102 | NFS_LAYOUT_RETURN, /* layoutreturn in progress */ |
6604b203 | 103 | NFS_LAYOUT_RETURN_LOCK, /* Serialise layoutreturn */ |
2370abda | 104 | NFS_LAYOUT_RETURN_REQUESTED, /* Return this layout ASAP */ |
47abadef | 105 | NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */ |
9bf87482 | 106 | NFS_LAYOUT_FIRST_LAYOUTGET, /* Serialize first layoutget */ |
5085607d | 107 | NFS_LAYOUT_INODE_FREEING, /* The inode is being freed */ |
e5e94017 BH |
108 | }; |
109 | ||
8a1636c4 | 110 | enum layoutdriver_policy_flags { |
88ac815c PT |
111 | /* Should the pNFS client commit and return the layout upon truncate to |
112 | * a smaller size */ | |
8a1636c4 | 113 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, |
fe0fe835 | 114 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
612aa983 | 115 | PNFS_READ_WHOLE_PAGE = 1 << 2, |
f86c3ac5 | 116 | PNFS_LAYOUTGET_ON_OPEN = 1 << 3, |
8a1636c4 BH |
117 | }; |
118 | ||
1775bc34 BH |
119 | struct nfs4_deviceid_node; |
120 | ||
85e174ba RL |
121 | /* Per-layout driver specific registration structure */ |
122 | struct pnfs_layoutdriver_type { | |
02c35fca FI |
123 | struct list_head pnfs_tblid; |
124 | const u32 id; | |
125 | const char *name; | |
126 | struct module *owner; | |
8a1636c4 | 127 | unsigned flags; |
661373b1 | 128 | unsigned max_deviceinfo_size; |
28ced9a8 | 129 | unsigned max_layoutget_response; |
636fb9c8 | 130 | |
738fd0f3 BH |
131 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
132 | int (*clear_layoutdriver) (struct nfs_server *); | |
133 | ||
636fb9c8 BH |
134 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
135 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); | |
136 | ||
a75b9df9 | 137 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
b1f69b75 | 138 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
03772d2f TM |
139 | void (*add_lseg) (struct pnfs_layout_hdr *layoutid, |
140 | struct pnfs_layout_segment *lseg, | |
141 | struct list_head *free_me); | |
94ad1c80 | 142 | |
c88953d8 CH |
143 | void (*return_range) (struct pnfs_layout_hdr *lo, |
144 | struct pnfs_layout_range *range); | |
145 | ||
94ad1c80 | 146 | /* test for nfs page cache coalescing */ |
1751c363 TM |
147 | const struct nfs_pageio_ops *pg_read_ops; |
148 | const struct nfs_pageio_ops *pg_write_ops; | |
64419a9b | 149 | |
ea2cf228 | 150 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
8dd37758 | 151 | void (*mark_request_commit) (struct nfs_page *req, |
ea2cf228 | 152 | struct pnfs_layout_segment *lseg, |
b57ff130 WAA |
153 | struct nfs_commit_info *cinfo, |
154 | u32 ds_commit_idx); | |
ea2cf228 FI |
155 | void (*clear_request_commit) (struct nfs_page *req, |
156 | struct nfs_commit_info *cinfo); | |
157 | int (*scan_commit_lists) (struct nfs_commit_info *cinfo, | |
158 | int max); | |
1763da12 FI |
159 | void (*recover_commit_reqs) (struct list_head *list, |
160 | struct nfs_commit_info *cinfo); | |
02d1426c WAA |
161 | struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo, |
162 | struct page *page); | |
ea2cf228 FI |
163 | int (*commit_pagelist)(struct inode *inode, |
164 | struct list_head *mds_pages, | |
165 | int how, | |
166 | struct nfs_commit_info *cinfo); | |
a861a1e1 | 167 | |
5bb89b47 TM |
168 | int (*sync)(struct inode *inode, bool datasync); |
169 | ||
64419a9b AA |
170 | /* |
171 | * Return PNFS_ATTEMPTED to indicate the layout code has attempted | |
172 | * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS | |
173 | */ | |
d45f60c6 WAA |
174 | enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *); |
175 | enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); | |
1775bc34 BH |
176 | |
177 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); | |
661373b1 CH |
178 | struct nfs4_deviceid_node * (*alloc_deviceid_node) |
179 | (struct nfs_server *server, struct pnfs_device *pdev, | |
180 | gfp_t gfp_flags); | |
04a55549 | 181 | |
287bd3e9 | 182 | int (*prepare_layoutreturn) (struct nfs4_layoutreturn_args *); |
ac7db726 | 183 | |
db29c089 | 184 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
5f919c9f | 185 | int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args); |
8733408d | 186 | int (*prepare_layoutstats) (struct nfs42_layoutstat_args *args); |
85e174ba RL |
187 | }; |
188 | ||
e5e94017 | 189 | struct pnfs_layout_hdr { |
2b28a7be | 190 | refcount_t plh_refcount; |
82714bd1 | 191 | atomic_t plh_outstanding; /* number of RPCs out */ |
b7edfaa1 | 192 | struct list_head plh_layouts; /* other client layouts */ |
fd9a8d71 | 193 | struct list_head plh_bulk_destroy; |
b7edfaa1 | 194 | struct list_head plh_segs; /* layout segments list */ |
68f74479 | 195 | struct list_head plh_return_segs; /* invalid layout segments */ |
f7e8917a | 196 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
25c75333 | 197 | unsigned long plh_retry_timestamp; |
566052c5 | 198 | unsigned long plh_flags; |
82714bd1 TM |
199 | nfs4_stateid plh_stateid; |
200 | u32 plh_barrier; /* ignore lower seqids */ | |
3982a6a2 | 201 | u32 plh_return_seq; |
016256df | 202 | enum pnfs_iomode plh_return_iomode; |
acff5880 | 203 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
a52458b4 | 204 | const struct cred *plh_lc_cred; /* layoutcommit cred */ |
b7edfaa1 | 205 | struct inode *plh_inode; |
e5e94017 BH |
206 | }; |
207 | ||
b1f69b75 AA |
208 | struct pnfs_device { |
209 | struct nfs4_deviceid dev_id; | |
210 | unsigned int layout_type; | |
211 | unsigned int mincount; | |
f1c097be | 212 | unsigned int maxcount; /* gdia_maxcount */ |
b1f69b75 | 213 | struct page **pages; |
b1f69b75 | 214 | unsigned int pgbase; |
f1c097be | 215 | unsigned int pglen; /* reply buffer length */ |
df52699e | 216 | unsigned char nocache : 1;/* May not be cached */ |
b1f69b75 AA |
217 | }; |
218 | ||
7f11d8d3 AA |
219 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
220 | ||
221 | struct pnfs_devicelist { | |
222 | unsigned int eof; | |
223 | unsigned int num_devs; | |
224 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; | |
225 | }; | |
226 | ||
02c35fca FI |
227 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
228 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); | |
229 | ||
b1f69b75 | 230 | /* nfs4proc.c */ |
dacb452d | 231 | extern size_t max_response_pages(struct nfs_server *server); |
b1f69b75 | 232 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
cd5875fe | 233 | struct pnfs_device *dev, |
a52458b4 | 234 | const struct cred *cred); |
dacb452d | 235 | extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout); |
6c16605d | 236 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync); |
b1f69b75 AA |
237 | |
238 | /* pnfs.c */ | |
70c3bd2b | 239 | void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); |
9369a431 | 240 | void pnfs_put_lseg(struct pnfs_layout_segment *lseg); |
1751c363 | 241 | |
ca440c38 | 242 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *); |
85e174ba | 243 | void unset_pnfs_layoutdriver(struct nfs_server *); |
b3230e80 | 244 | void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio); |
d8007d4d | 245 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
493292dd | 246 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
6296556f PT |
247 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, |
248 | struct nfs_page *req, u64 wb_size); | |
180bb5ec | 249 | void pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *); |
dce81290 | 250 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
b4fdac1a WAA |
251 | size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, |
252 | struct nfs_page *prev, struct nfs_page *req); | |
1b0ae068 | 253 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
a0b0a6e3 | 254 | struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); |
29a8bfe5 | 255 | void pnfs_layoutget_free(struct nfs4_layoutget *lgp); |
43f1b3da | 256 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
e5e94017 | 257 | void pnfs_destroy_layout(struct nfs_inode *); |
974cec8c | 258 | void pnfs_destroy_all_layouts(struct nfs_client *); |
fd9a8d71 TM |
259 | int pnfs_destroy_layouts_byfsid(struct nfs_client *clp, |
260 | struct nfs_fsid *fsid, | |
261 | bool is_recall); | |
262 | int pnfs_destroy_layouts_byclid(struct nfs_client *clp, | |
263 | bool is_recall); | |
ecf84026 TM |
264 | bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst, |
265 | struct pnfs_layout_range *dst_range, | |
266 | struct inode *inode); | |
70c3bd2b | 267 | void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo); |
43f1b3da FI |
268 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
269 | const nfs4_stateid *new, | |
270 | bool update_barrier); | |
49a85061 | 271 | int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
43f1b3da | 272 | struct list_head *tmp_list, |
6d597e17 JL |
273 | const struct pnfs_layout_range *recall_range, |
274 | u32 seq); | |
10335556 | 275 | int pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo, |
fc7ff367 | 276 | struct list_head *tmp_list, |
6d597e17 JL |
277 | const struct pnfs_layout_range *recall_range, |
278 | u32 seq); | |
5f46be04 TM |
279 | int pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo, |
280 | struct list_head *lseg_list); | |
1c5bd76d TM |
281 | bool pnfs_roc(struct inode *ino, |
282 | struct nfs4_layoutreturn_args *args, | |
283 | struct nfs4_layoutreturn_res *res, | |
a52458b4 | 284 | const struct cred *cred); |
287a9c55 TM |
285 | int pnfs_roc_done(struct rpc_task *task, struct inode *inode, |
286 | struct nfs4_layoutreturn_args **argpp, | |
287 | struct nfs4_layoutreturn_res **respp, | |
288 | int *ret); | |
1c5bd76d TM |
289 | void pnfs_roc_release(struct nfs4_layoutreturn_args *args, |
290 | struct nfs4_layoutreturn_res *res, | |
291 | int ret); | |
500d701f | 292 | bool pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task); |
67af7611 | 293 | void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t); |
db29c089 | 294 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
ef311537 | 295 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
5bb89b47 TM |
296 | int pnfs_generic_sync(struct inode *inode, bool datasync); |
297 | int pnfs_nfs_generic_sync(struct inode *inode, bool datasync); | |
cbe82603 | 298 | int _pnfs_return_layout(struct inode *); |
24028672 | 299 | int pnfs_commit_and_return_layout(struct inode *); |
d45f60c6 WAA |
300 | void pnfs_ld_write_done(struct nfs_pgio_header *); |
301 | void pnfs_ld_read_done(struct nfs_pgio_header *); | |
1b1bc66b | 302 | void pnfs_read_resend_pnfs(struct nfs_pgio_header *); |
7c24d948 AA |
303 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
304 | struct nfs_open_context *ctx, | |
305 | loff_t pos, | |
306 | u64 count, | |
307 | enum pnfs_iomode iomode, | |
c7d73af2 | 308 | bool strict_iomode, |
7c24d948 | 309 | gfp_t gfp_flags); |
68f74479 | 310 | void pnfs_layoutreturn_free_lsegs(struct pnfs_layout_hdr *lo, |
2a974425 | 311 | const nfs4_stateid *arg_stateid, |
68f74479 | 312 | const struct pnfs_layout_range *range, |
68f74479 | 313 | const nfs4_stateid *stateid); |
e5e94017 | 314 | |
03772d2f TM |
315 | void pnfs_generic_layout_insert_lseg(struct pnfs_layout_hdr *lo, |
316 | struct pnfs_layout_segment *lseg, | |
317 | bool (*is_after)(const struct pnfs_layout_range *lseg_range, | |
318 | const struct pnfs_layout_range *old), | |
319 | bool (*do_merge)(struct pnfs_layout_segment *lseg, | |
320 | struct pnfs_layout_segment *old), | |
321 | struct list_head *free_me); | |
322 | ||
c47abcf8 | 323 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
53113ad3 WAA |
324 | int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *); |
325 | int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *); | |
82be417a | 326 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
016256df PT |
327 | void pnfs_error_mark_layout_for_return(struct inode *inode, |
328 | struct pnfs_layout_segment *lseg); | |
c47abcf8 AA |
329 | /* nfs4_deviceid_flags */ |
330 | enum { | |
331 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ | |
1dfed273 | 332 | NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */ |
df52699e | 333 | NFS_DEVICEID_NOCACHE, /* device may not be cached */ |
c47abcf8 AA |
334 | }; |
335 | ||
a1eaecbc BH |
336 | /* pnfs_dev.c */ |
337 | struct nfs4_deviceid_node { | |
338 | struct hlist_node node; | |
9e3bd4e2 | 339 | struct hlist_node tmpnode; |
1775bc34 | 340 | const struct pnfs_layoutdriver_type *ld; |
a1eaecbc | 341 | const struct nfs_client *nfs_client; |
c47abcf8 | 342 | unsigned long flags; |
1dfed273 | 343 | unsigned long timestamp_unavailable; |
a1eaecbc | 344 | struct nfs4_deviceid deviceid; |
84a80f62 | 345 | struct rcu_head rcu; |
a1eaecbc BH |
346 | atomic_t ref; |
347 | }; | |
348 | ||
661373b1 CH |
349 | struct nfs4_deviceid_node * |
350 | nfs4_find_get_deviceid(struct nfs_server *server, | |
a52458b4 | 351 | const struct nfs4_deviceid *id, const struct cred *cred, |
661373b1 | 352 | gfp_t gfp_mask); |
35c8bb54 | 353 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
661373b1 | 354 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, |
a1eaecbc | 355 | const struct nfs4_deviceid *); |
a1eaecbc | 356 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); |
76c66905 | 357 | void nfs4_mark_deviceid_available(struct nfs4_deviceid_node *node); |
1dfed273 TM |
358 | void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); |
359 | bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); | |
1775bc34 | 360 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
a1eaecbc | 361 | |
f54bcf2e TH |
362 | /* pnfs_nfs.c */ |
363 | void pnfs_generic_clear_request_commit(struct nfs_page *req, | |
364 | struct nfs_commit_info *cinfo); | |
365 | void pnfs_generic_commit_release(void *calldata); | |
366 | void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data); | |
367 | void pnfs_generic_rw_release(void *data); | |
368 | void pnfs_generic_recover_commit_reqs(struct list_head *dst, | |
369 | struct nfs_commit_info *cinfo); | |
370 | int pnfs_generic_commit_pagelist(struct inode *inode, | |
371 | struct list_head *mds_pages, | |
372 | int how, | |
373 | struct nfs_commit_info *cinfo, | |
374 | int (*initiate_commit)(struct nfs_commit_data *data, | |
375 | int how)); | |
376 | int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max); | |
377 | void pnfs_generic_write_commit_done(struct rpc_task *task, void *data); | |
875ae069 PT |
378 | void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds); |
379 | struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs, | |
380 | gfp_t gfp_flags); | |
5f01d953 | 381 | void nfs4_pnfs_v3_ds_connect_unload(void); |
a33e4b03 | 382 | int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, |
7405f9e1 | 383 | struct nfs4_deviceid_node *devid, unsigned int timeo, |
7d38de3f | 384 | unsigned int retrans, u32 version, u32 minor_version); |
6b7f3cf9 PT |
385 | struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net, |
386 | struct xdr_stream *xdr, | |
387 | gfp_t gfp_flags); | |
338d00cf TH |
388 | void pnfs_layout_mark_request_commit(struct nfs_page *req, |
389 | struct pnfs_layout_segment *lseg, | |
390 | struct nfs_commit_info *cinfo, | |
391 | u32 ds_commit_idx); | |
2409a976 FI |
392 | void pnfs_lgopen_prepare(struct nfs4_opendata *data, |
393 | struct nfs_open_context *ctx); | |
394 | void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, | |
395 | struct nfs_open_context *ctx); | |
30ae2412 | 396 | void nfs4_lgopen_release(struct nfs4_layoutget *lgp); |
f54bcf2e | 397 | |
40dd4b7a TM |
398 | static inline bool nfs_have_layout(struct inode *inode) |
399 | { | |
400 | return NFS_I(inode)->layout != NULL; | |
401 | } | |
402 | ||
45fcc7bc TM |
403 | static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo) |
404 | { | |
405 | return test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) == 0; | |
406 | } | |
407 | ||
30ff0603 CH |
408 | static inline struct nfs4_deviceid_node * |
409 | nfs4_get_deviceid(struct nfs4_deviceid_node *d) | |
410 | { | |
411 | atomic_inc(&d->ref); | |
412 | return d; | |
413 | } | |
414 | ||
d684d2ae | 415 | static inline struct pnfs_layout_segment * |
9369a431 | 416 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
417 | { |
418 | if (lseg) { | |
eba6dd69 | 419 | refcount_inc(&lseg->pls_refcount); |
4e857c58 | 420 | smp_mb__after_atomic(); |
d684d2ae FI |
421 | } |
422 | return lseg; | |
423 | } | |
424 | ||
b20135d0 TM |
425 | static inline bool |
426 | pnfs_is_valid_lseg(struct pnfs_layout_segment *lseg) | |
427 | { | |
428 | return test_bit(NFS_LSEG_VALID, &lseg->pls_flags) != 0; | |
429 | } | |
430 | ||
e5e94017 BH |
431 | /* Return true if a layout driver is being used for this mountpoint */ |
432 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) | |
433 | { | |
434 | return nfss->pnfs_curr_ld != NULL; | |
435 | } | |
85e174ba | 436 | |
a861a1e1 | 437 | static inline int |
ea2cf228 FI |
438 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
439 | struct nfs_commit_info *cinfo) | |
a861a1e1 | 440 | { |
ea2cf228 | 441 | if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0) |
a861a1e1 | 442 | return PNFS_NOT_ATTEMPTED; |
ea2cf228 FI |
443 | return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo); |
444 | } | |
445 | ||
446 | static inline struct pnfs_ds_commit_info * | |
447 | pnfs_get_ds_info(struct inode *inode) | |
448 | { | |
449 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
450 | ||
451 | if (ld == NULL || ld->get_ds_info == NULL) | |
452 | return NULL; | |
453 | return ld->get_ds_info(inode); | |
a861a1e1 FI |
454 | } |
455 | ||
f54bcf2e TH |
456 | static inline void |
457 | pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node) | |
458 | { | |
459 | set_bit(NFS_DEVICEID_INVALID, &node->flags); | |
460 | } | |
461 | ||
8dd37758 | 462 | static inline bool |
ea2cf228 | 463 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
b57ff130 | 464 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
a861a1e1 | 465 | { |
9fcd5960 | 466 | struct inode *inode = d_inode(nfs_req_openctx(req)->dentry); |
8dd37758 | 467 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
a861a1e1 | 468 | |
8dd37758 TM |
469 | if (lseg == NULL || ld->mark_request_commit == NULL) |
470 | return false; | |
b57ff130 | 471 | ld->mark_request_commit(req, lseg, cinfo, ds_commit_idx); |
8dd37758 | 472 | return true; |
a861a1e1 FI |
473 | } |
474 | ||
8dd37758 | 475 | static inline bool |
ea2cf228 | 476 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 477 | { |
9fcd5960 | 478 | struct inode *inode = d_inode(nfs_req_openctx(req)->dentry); |
8dd37758 | 479 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
d6d6dc7c | 480 | |
8dd37758 TM |
481 | if (ld == NULL || ld->clear_request_commit == NULL) |
482 | return false; | |
ea2cf228 | 483 | ld->clear_request_commit(req, cinfo); |
8dd37758 | 484 | return true; |
d6d6dc7c FI |
485 | } |
486 | ||
487 | static inline int | |
ea2cf228 FI |
488 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
489 | int max) | |
d6d6dc7c | 490 | { |
ea2cf228 | 491 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) |
d6d6dc7c | 492 | return 0; |
ea2cf228 FI |
493 | else |
494 | return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); | |
a861a1e1 FI |
495 | } |
496 | ||
02d1426c WAA |
497 | static inline struct nfs_page * |
498 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
499 | struct page *page) | |
500 | { | |
501 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; | |
502 | ||
503 | if (ld == NULL || ld->search_commit_reqs == NULL) | |
504 | return NULL; | |
505 | return ld->search_commit_reqs(cinfo, page); | |
506 | } | |
507 | ||
8a1636c4 BH |
508 | /* Should the pNFS client commit and return the layout upon a setattr */ |
509 | static inline bool | |
510 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
511 | { | |
512 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
513 | return false; | |
514 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & | |
515 | PNFS_LAYOUTRET_ON_SETATTR; | |
516 | } | |
517 | ||
612aa983 CH |
518 | static inline bool |
519 | pnfs_ld_read_whole_page(struct inode *inode) | |
520 | { | |
521 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
522 | return false; | |
523 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE; | |
524 | } | |
525 | ||
5bb89b47 TM |
526 | static inline int |
527 | pnfs_sync_inode(struct inode *inode, bool datasync) | |
528 | { | |
529 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) | |
530 | return 0; | |
531 | return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync); | |
532 | } | |
533 | ||
d8c951c3 TM |
534 | static inline bool |
535 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
536 | { | |
537 | struct nfs_inode *nfsi = NFS_I(inode); | |
538 | ||
539 | return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 || | |
540 | test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0; | |
541 | } | |
542 | ||
cbe82603 BH |
543 | static inline int pnfs_return_layout(struct inode *ino) |
544 | { | |
545 | struct nfs_inode *nfsi = NFS_I(ino); | |
546 | struct nfs_server *nfss = NFS_SERVER(ino); | |
547 | ||
d78471d3 BC |
548 | if (pnfs_enabled_sb(nfss) && nfsi->layout) { |
549 | set_bit(NFS_LAYOUT_RETURN_REQUESTED, &nfsi->layout->plh_flags); | |
cbe82603 | 550 | return _pnfs_return_layout(ino); |
d78471d3 | 551 | } |
cbe82603 BH |
552 | |
553 | return 0; | |
554 | } | |
555 | ||
82be417a AA |
556 | static inline bool |
557 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
558 | struct nfs_server *nfss) | |
559 | { | |
fb47ddc9 | 560 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
82be417a AA |
561 | nfss->pnfs_curr_ld->id == src->l_type); |
562 | } | |
563 | ||
0762ed2c TM |
564 | static inline u64 |
565 | pnfs_calc_offset_end(u64 offset, u64 len) | |
566 | { | |
567 | if (len == NFS4_MAX_UINT64 || len >= NFS4_MAX_UINT64 - offset) | |
568 | return NFS4_MAX_UINT64; | |
569 | return offset + len - 1; | |
570 | } | |
571 | ||
572 | static inline u64 | |
573 | pnfs_calc_offset_length(u64 offset, u64 end) | |
574 | { | |
575 | if (end == NFS4_MAX_UINT64 || end <= offset) | |
576 | return NFS4_MAX_UINT64; | |
577 | return 1 + end - offset; | |
578 | } | |
579 | ||
e144e539 TM |
580 | static inline void |
581 | pnfs_copy_range(struct pnfs_layout_range *dst, | |
582 | const struct pnfs_layout_range *src) | |
583 | { | |
584 | memcpy(dst, src, sizeof(*dst)); | |
585 | } | |
586 | ||
17822b20 TM |
587 | static inline u64 |
588 | pnfs_end_offset(u64 start, u64 len) | |
589 | { | |
590 | if (NFS4_MAX_UINT64 - start <= len) | |
591 | return NFS4_MAX_UINT64; | |
592 | return start + len; | |
593 | } | |
594 | ||
595 | /* | |
596 | * Are 2 ranges intersecting? | |
597 | * start1 end1 | |
598 | * [----------------------------------) | |
599 | * start2 end2 | |
600 | * [----------------) | |
601 | */ | |
602 | static inline bool | |
603 | pnfs_is_range_intersecting(u64 start1, u64 end1, u64 start2, u64 end2) | |
604 | { | |
605 | return (end1 == NFS4_MAX_UINT64 || start2 < end1) && | |
606 | (end2 == NFS4_MAX_UINT64 || start1 < end2); | |
607 | } | |
608 | ||
609 | static inline bool | |
610 | pnfs_lseg_range_intersecting(const struct pnfs_layout_range *l1, | |
611 | const struct pnfs_layout_range *l2) | |
612 | { | |
613 | u64 end1 = pnfs_end_offset(l1->offset, l1->length); | |
614 | u64 end2 = pnfs_end_offset(l2->offset, l2->length); | |
615 | ||
616 | return pnfs_is_range_intersecting(l1->offset, end1, l2->offset, end2); | |
617 | } | |
618 | ||
08cb5b0f BC |
619 | static inline bool |
620 | pnfs_lseg_request_intersecting(struct pnfs_layout_segment *lseg, struct nfs_page *req) | |
621 | { | |
622 | u64 seg_last = pnfs_end_offset(lseg->pls_range.offset, lseg->pls_range.length); | |
623 | u64 req_last = req_offset(req) + req->wb_bytes; | |
624 | ||
625 | return pnfs_is_range_intersecting(lseg->pls_range.offset, seg_last, | |
626 | req_offset(req), req_last); | |
627 | } | |
628 | ||
bbf58bf3 TM |
629 | extern unsigned int layoutstats_timer; |
630 | ||
6f00866d TM |
631 | #ifdef NFS_DEBUG |
632 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); | |
633 | #else | |
634 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) | |
635 | { | |
636 | } | |
bbf58bf3 | 637 | |
6f00866d | 638 | #endif /* NFS_DEBUG */ |
85e174ba RL |
639 | #else /* CONFIG_NFS_V4_1 */ |
640 | ||
40dd4b7a TM |
641 | static inline bool nfs_have_layout(struct inode *inode) |
642 | { | |
643 | return false; | |
644 | } | |
645 | ||
974cec8c AA |
646 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
647 | { | |
648 | } | |
649 | ||
e5e94017 BH |
650 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
651 | { | |
652 | } | |
653 | ||
d684d2ae | 654 | static inline struct pnfs_layout_segment * |
9369a431 | 655 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
656 | { |
657 | return NULL; | |
658 | } | |
659 | ||
9369a431 | 660 | static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) |
d684d2ae FI |
661 | { |
662 | } | |
663 | ||
cbe82603 BH |
664 | static inline int pnfs_return_layout(struct inode *ino) |
665 | { | |
666 | return 0; | |
667 | } | |
668 | ||
24028672 TM |
669 | static inline int pnfs_commit_and_return_layout(struct inode *inode) |
670 | { | |
671 | return 0; | |
672 | } | |
673 | ||
8a1636c4 BH |
674 | static inline bool |
675 | pnfs_ld_layoutret_on_setattr(struct inode *inode) | |
676 | { | |
677 | return false; | |
678 | } | |
679 | ||
612aa983 CH |
680 | static inline bool |
681 | pnfs_ld_read_whole_page(struct inode *inode) | |
682 | { | |
683 | return false; | |
684 | } | |
685 | ||
5bb89b47 TM |
686 | static inline int |
687 | pnfs_sync_inode(struct inode *inode, bool datasync) | |
688 | { | |
689 | return 0; | |
690 | } | |
691 | ||
10b7e9ad TM |
692 | static inline bool |
693 | pnfs_layoutcommit_outstanding(struct inode *inode) | |
694 | { | |
695 | return false; | |
696 | } | |
697 | ||
698 | ||
f7e8917a | 699 | static inline bool |
1c5bd76d TM |
700 | pnfs_roc(struct inode *ino, |
701 | struct nfs4_layoutreturn_args *args, | |
702 | struct nfs4_layoutreturn_res *res, | |
a52458b4 | 703 | const struct cred *cred) |
f7e8917a FI |
704 | { |
705 | return false; | |
706 | } | |
707 | ||
287a9c55 TM |
708 | static inline int |
709 | pnfs_roc_done(struct rpc_task *task, struct inode *inode, | |
710 | struct nfs4_layoutreturn_args **argpp, | |
711 | struct nfs4_layoutreturn_res **respp, | |
712 | int *ret) | |
713 | { | |
714 | return 0; | |
715 | } | |
716 | ||
f7e8917a | 717 | static inline void |
1c5bd76d TM |
718 | pnfs_roc_release(struct nfs4_layoutreturn_args *args, |
719 | struct nfs4_layoutreturn_res *res, | |
720 | int ret) | |
f7e8917a | 721 | { |
f7e8917a FI |
722 | } |
723 | ||
500d701f PT |
724 | static inline bool |
725 | pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task) | |
726 | { | |
727 | return false; | |
728 | } | |
729 | ||
738fd0f3 | 730 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
ca440c38 JL |
731 | const struct nfs_fh *mntfh, |
732 | struct nfs_fsinfo *fsinfo) | |
85e174ba RL |
733 | { |
734 | } | |
735 | ||
736 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) | |
737 | { | |
738 | } | |
739 | ||
a861a1e1 | 740 | static inline int |
ea2cf228 FI |
741 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
742 | struct nfs_commit_info *cinfo) | |
a861a1e1 FI |
743 | { |
744 | return PNFS_NOT_ATTEMPTED; | |
745 | } | |
746 | ||
ea2cf228 FI |
747 | static inline struct pnfs_ds_commit_info * |
748 | pnfs_get_ds_info(struct inode *inode) | |
749 | { | |
750 | return NULL; | |
751 | } | |
752 | ||
8dd37758 | 753 | static inline bool |
ea2cf228 | 754 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
b57ff130 | 755 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
a861a1e1 | 756 | { |
8dd37758 | 757 | return false; |
a861a1e1 FI |
758 | } |
759 | ||
8dd37758 | 760 | static inline bool |
ea2cf228 | 761 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
a861a1e1 | 762 | { |
8dd37758 | 763 | return false; |
d6d6dc7c FI |
764 | } |
765 | ||
766 | static inline int | |
ea2cf228 FI |
767 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
768 | int max) | |
d6d6dc7c FI |
769 | { |
770 | return 0; | |
a861a1e1 FI |
771 | } |
772 | ||
02d1426c WAA |
773 | static inline struct nfs_page * |
774 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, | |
775 | struct page *page) | |
776 | { | |
777 | return NULL; | |
778 | } | |
779 | ||
ef311537 | 780 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
863a3c6c AA |
781 | { |
782 | return 0; | |
783 | } | |
1775bc34 | 784 | |
82be417a AA |
785 | static inline bool |
786 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, | |
787 | struct nfs_server *nfss) | |
788 | { | |
789 | return false; | |
790 | } | |
791 | ||
792 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) | |
793 | { | |
794 | return NULL; | |
795 | } | |
796 | ||
5f01d953 PT |
797 | static inline void nfs4_pnfs_v3_ds_connect_unload(void) |
798 | { | |
799 | } | |
800 | ||
c16467dc | 801 | static inline bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst, |
ecf84026 | 802 | struct pnfs_layout_range *dst_range, |
7380020e TM |
803 | struct inode *inode) |
804 | { | |
805 | return false; | |
806 | } | |
2409a976 FI |
807 | |
808 | static inline void pnfs_lgopen_prepare(struct nfs4_opendata *data, | |
809 | struct nfs_open_context *ctx) | |
810 | { | |
811 | } | |
812 | ||
813 | static inline void pnfs_parse_lgopen(struct inode *ino, | |
814 | struct nfs4_layoutget *lgp, | |
815 | struct nfs_open_context *ctx) | |
816 | { | |
817 | } | |
30ae2412 FI |
818 | |
819 | static inline void nfs4_lgopen_release(struct nfs4_layoutget *lgp) | |
820 | { | |
821 | } | |
822 | ||
c8bf7073 TM |
823 | static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo) |
824 | { | |
825 | return false; | |
826 | } | |
827 | ||
85e174ba RL |
828 | #endif /* CONFIG_NFS_V4_1 */ |
829 | ||
865a7ecb | 830 | #if IS_ENABLED(CONFIG_NFS_V4_2) |
c8ad8894 | 831 | int pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags); |
865a7ecb PT |
832 | #else |
833 | static inline int | |
c8ad8894 | 834 | pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags) |
865a7ecb PT |
835 | { |
836 | return 0; | |
837 | } | |
838 | #endif | |
839 | ||
85e174ba | 840 | #endif /* FS_NFS_PNFS_H */ |